CN106223899A - The method that single current bypass valve and use single current bypass valve carry out kill-job - Google Patents
The method that single current bypass valve and use single current bypass valve carry out kill-job Download PDFInfo
- Publication number
- CN106223899A CN106223899A CN201610838779.3A CN201610838779A CN106223899A CN 106223899 A CN106223899 A CN 106223899A CN 201610838779 A CN201610838779 A CN 201610838779A CN 106223899 A CN106223899 A CN 106223899A
- Authority
- CN
- China
- Prior art keywords
- outer tube
- bypass valve
- inner tube
- single current
- annular space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/05—Flapper valves
Abstract
The present invention relates to a kind of single current bypass valve, including outer tube and inner tube, described outer tube sleeve is located at outside said inner tube, and said inner tube is connected with described outer tube by fixed mount；Annular space is formed between the outer surface of said inner tube and the inner surface of described outer tube；Offering through hole on described outer tube wall, described through hole is in order to connect described annular space and outside mineshaft annulus；Being provided with check valve in described annular space, described check valve is connected with said inner tube and described outer tube by fixed mount.Bypass valve arranges check valve, during kill-job, controls the circulation path of well killing fluid, make well killing fluid mixing fully, uniformly, the well killing fluid of position below bypass valve obtains Efficient Cycle, being substantially improved kill-job effect, thus the ability of bypass valve equilibrium strata pressure gets a promotion, Oil/gas Well production efficiency improves.Realize full pit shaft kill-job, greatly reduce well control risk.
Description
[technical field]
The invention belongs to oil gas well mining technical field, relate to a kind of single current bypass valve in more detail and use single current
Formula bypass valve carries out the method for kill-job.
[background technology]
Bypass valve is arranged on the middle and upper part of whole tubing string, and during kill-job, well killing fluid flows through bypass valve, circulates from bypass valve top,
Well killing fluid flows through hole on bypass valve and arrives mineshaft annulus, and flow upwards out, and well killing fluid, to not tubing string bottom, causes kill-job
Liquid mixing difficulty, circulating degasification is not thorough, i.e. the well killing fluid of position below bypass valve can not get Efficient Cycle, it is impossible to increases well
Add proportion, cause kill-job effect bad.
[summary of the invention]
It is an object of the invention to provide a kind of single current bypass valve, to solve the well killing fluid proposed in above-mentioned background technology
Circulating from bypass valve top, do not arrive tubing string bottom, the well killing fluid of position below bypass valve can not get the problem of Efficient Cycle.
For achieving the above object, the present invention provides following technical scheme:
A kind of single current bypass valve, including outer tube and inner tube, described outer tube sleeve is located at outside said inner tube, and said inner tube is passed through
Fixed mount is connected with described outer tube；Annular space is formed between the outer surface of said inner tube and the inner surface of described outer tube；Described outer tube wall
On offer through hole, described through hole is in order to connect described annular space and outside mineshaft annulus；Check valve, institute it is provided with in described annular space
State check valve to be connected with said inner tube and described outer tube by fixed mount.
Further, described check valve includes one-way valve seat, spool, valve core reseting spring and ring-type supporting positive cover；Described ring
Shape supporting positive cover and described one-way valve seat are all embedded between said inner tube and described outer tube；Described spool is positioned at described one-way valve seat
And between described ring-type supporting positive cover；The lower end of described valve core reseting spring connects described spool, described valve core reseting spring upper
End connects described ring-type supporting positive cover.
Further, described through hole is inclined upwardly setting, and quantity is multiple, in order to strengthen stretching resistance and twisting resistance, many
Individual described through hole is spirally distributed on the wall of described outer tube.
Further, described one-way valve seat lower end is provided with lining pipe, described lining pipe and described outer tube clamping.
The present invention also provides for a kind of method using single current bypass valve to carry out kill-job, comprises the following steps:
S1: preparation well killing fluid；
S2: injected well killing fluid to mineshaft annulus by slush pump；
S3: well killing fluid enters described annular space from described through hole, and bypass valve cuts out；
S4: well killing fluid is descending, enters tubing string from bottom hydrophthalmia；
S5: well killing fluid is circulated up out well head by tubing string and enters mud ditch；
S6: one loop ends, then perform step S1.
The invention has the beneficial effects as follows: check valve is set on bypass valve, control the circulation path of well killing fluid during kill-job, make
Fully, uniformly, the well killing fluid of position below bypass valve obtains Efficient Cycle, is substantially improved kill-job effect in well killing fluid mixing, thus
The ability of bypass valve equilibrium strata pressure gets a promotion, and Oil/gas Well production efficiency improves.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the single current bypass valve that the present invention provides；
Fig. 2 is the A-A sectional view in Fig. 1；
Fig. 3 is the partial enlarged drawing of single current bypass valve closed mode in Fig. 1；
Fig. 4 is the partial enlarged drawing of single current bypass valve open mode in Fig. 1.
Description of reference numerals is as follows:
1-outer tube；2-inner tube；3-through hole；4-check valve；41-one-way valve seat；42-spool；43-valve core reseting spring；44-
Ring-type supporting positive cover；5-lining pipe.
[detailed description of the invention]
For making the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Detailed description.Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained owning on the premise of not making creative work
Other embodiment, broadly falls into the scope that the present invention is protected.
As shown in Figures 1 to 4, the invention provides a kind of single current bypass valve, including outer tube 1 and inner tube 2, outer tube 1 overlaps
Being located at outside inner tube 2, inner tube 2 is connected with outer tube 1 by fixed mount；Ring is formed between the outer surface of inner tube 2 and the inner surface of outer tube 1
Empty；Offering through hole on outer tube 2 wall, through hole is in order to connect annular space and outside mineshaft annulus；Check valve 4 it is provided with in annular space, single
It is connected with inner tube 2 and outer tube 1 by fixed mount to valve 4.
When needing kill-job, as shown in figures 1 and 3, well killing fluid is injected from mineshaft annulus, well killing fluid leading to from outer tube 1
Hole 3 flows in the annular space between outer tube 1 and inner tube 2, and check valve 4 closes the fluid passage in annular space after being impacted, well killing fluid without
Method is passed through from bypass valve 4；Well killing fluid moves to bottom tubing string from mineshaft annulus, well killing fluid mix homogeneously, fully, below bypass valve
The well killing fluid of position obtains Efficient Cycle, and kill-job is effective, reaches the purpose of equilibrium strata pressure.During without kill-job, such as Fig. 2 institute
Showing, no longer injecting well killing fluid to mineshaft annulus, check valve 4 is returned to open mode, normal operation.
As the improvement of present embodiment, check valve 4 includes one-way valve seat 41, spool 42, valve core reseting spring 43 and ring
Shape supporting positive cover 44；Ring-type supporting positive cover 44 and one-way valve seat 41 are all embedded between inner tube 2 and outer tube 1；Spool 42 is positioned at check valve
Between seat 41 and ring-type supporting positive cover 44；The lower end of valve core reseting spring 44 connects spool 42, and the upper end of valve core reseting spring 44 is even
T-Ring shape supporting positive cover 44.
During kill-job, spool 42 stress on check valve 4 moves downward, and valve core reseting spring 43 is elongated, and spool 42 moves
To limited stopping lucky during one-way valve seat 41, the fluid passage in annular space is blocked；Ring-type supporting positive cover 44 is in order to limit spool
The movement of 42 horizontal directions, it is ensured that the fluid passage in annular space is completely closed by spool 42.When stopping injecting well killing fluid, act on
The well killing fluid impulsive force of spool 42 disappears, and valve core reseting spring 43 resilience, spool 42 also moves upward, the fluid passage in annular space
Open, carry out normal operation.
Through hole 3 is inclined upwardly setting, and quantity is multiple, and in order to strengthen stretching resistance and twisting resistance, multiple through holes 3 are helically
Shape is distributed on the wall of outer tube 1.
As the improvement of embodiment, one-way valve seat 41 lower end is provided with lining pipe 5, lining pipe 5 and outer tube 1 clamping.
The present invention also provides for a kind of method using single current bypass valve to carry out kill-job, comprises the following steps:
S1: preparation well killing fluid；
S2: injected well killing fluid to mineshaft annulus by slush pump；
S3: well killing fluid enters annular space from through hole 3, and bypass valve cuts out；
S4: well killing fluid is descending, enters tubing string from bottom hydrophthalmia；
S5: well killing fluid is circulated up out well head by tubing string and enters mud ditch；
S6: one loop ends, then perform step S1.
The present invention is not limited to above-mentioned preferred forms, and those of ordinary skill in the art may be used under the enlightenment of the present invention
Draw other various forms of products, no matter but in its shape or structure, make any change, every have same as the present application
Or akin technical scheme, within all falling within protection scope of the present invention.
Claims (5)
1. a single current bypass valve, including outer tube (1) and inner tube (2), described outer tube (1) is sheathed on said inner tube (2) outward, institute
State inner tube (2) to be connected with described outer tube (1) by fixed mount；The outer surface of said inner tube (2) and the inner surface of described outer tube (1)
Between formed annular space；Offering through hole (3) on described outer tube (1) wall, described through hole (3) is in order to connect described annular space and outside pit shaft
Annular space；It is characterized in that, be provided with check valve (4) in described annular space, described check valve (4) passes through fixed mount and said inner tube
(2) connect with described outer tube (1).
Single current bypass valve the most according to claim 1, it is characterised in that described check valve (4) includes one-way valve seat
(41), spool (42), valve core reseting spring (43) and ring-type supporting positive cover (44)；Described ring-type supporting positive cover (44) and described check valve
Seat (41) is all embedded between said inner tube (2) and described outer tube (1)；Described spool (42) be positioned at described one-way valve seat (41) and
Between described ring-type supporting positive cover (44)；The lower end of described valve core reseting spring (43) connects described spool (42), and described spool is multiple
The upper end of position spring (43) connects described ring-type supporting positive cover (44).
Single current bypass valve the most according to claim 1, it is characterised in that described through hole (3) is inclined upwardly setting, and number
Amount is for multiple, and multiple described through holes (3) are spirally distributed on the wall of described outer tube (1).
4. according to the single current bypass valve described in any one of claims 1 to 3, it is characterised in that under described one-way valve seat (41)
End is provided with lining pipe (5), described lining pipe (5) and described outer tube (1) clamping.
5. one kind uses the method that single current bypass valve carries out kill-job, it is characterised in that comprise the following steps:
S1: preparation well killing fluid；
S2: injected well killing fluid to mineshaft annulus by slush pump；
S3: well killing fluid enters described annular space from described through hole (3), and bypass valve cuts out；
S4: well killing fluid is descending, enters tubing string from bottom hydrophthalmia；
S5: well killing fluid is circulated up out well head by tubing string and enters mud ditch；
S6: one loop ends, then perform step S1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838779.3A CN106223899B (en) | 2016-09-21 | 2016-09-21 | Single current by-passing valve and the method for carrying out kill-job using single current by-passing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838779.3A CN106223899B (en) | 2016-09-21 | 2016-09-21 | Single current by-passing valve and the method for carrying out kill-job using single current by-passing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106223899A true CN106223899A (en) | 2016-12-14 |
| CN106223899B CN106223899B (en) | 2019-01-18 |
Family
ID=58076518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610838779.3A Active CN106223899B (en) | 2016-09-21 | 2016-09-21 | Single current by-passing valve and the method for carrying out kill-job using single current by-passing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106223899B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115012878A (en) * | 2022-06-30 | 2022-09-06 | 西南石油大学 | Double-layer pipe-based inhibitor filling system for sulfur-containing gas well without production stop |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004085793A1 (en) * | 2003-03-28 | 2004-10-07 | Smith International, Inc. | Wellbore annulus flushing valve |
| CN102418496A (en) * | 2011-08-17 | 2012-04-18 | 长沙市罡拓能源科技有限公司 | Self-balanced underground full-bore check valve |
| CN205064946U (en) * | 2015-09-09 | 2016-03-02 | 中国石油化工股份有限公司 | Multifunctional check valve |
| CN205089283U (en) * | 2015-11-09 | 2016-03-16 | 中国石油集团川庆钻探工程有限公司 | One -way formula is closing well recycle valve in pit |
| CN205172487U (en) * | 2015-10-30 | 2016-04-20 | 天津立林石油机械有限公司 | One -way bypass valve is used to screw rod drilling tool |
| CN206111140U (en) * | 2016-09-21 | 2017-04-19 | 库尔勒施得石油技术服务有限公司 | Single current bypass valve |
-
2016
- 2016-09-21 CN CN201610838779.3A patent/CN106223899B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004085793A1 (en) * | 2003-03-28 | 2004-10-07 | Smith International, Inc. | Wellbore annulus flushing valve |
| CN102418496A (en) * | 2011-08-17 | 2012-04-18 | 长沙市罡拓能源科技有限公司 | Self-balanced underground full-bore check valve |
| CN205064946U (en) * | 2015-09-09 | 2016-03-02 | 中国石油化工股份有限公司 | Multifunctional check valve |
| CN205172487U (en) * | 2015-10-30 | 2016-04-20 | 天津立林石油机械有限公司 | One -way bypass valve is used to screw rod drilling tool |
| CN205089283U (en) * | 2015-11-09 | 2016-03-16 | 中国石油集团川庆钻探工程有限公司 | One -way formula is closing well recycle valve in pit |
| CN206111140U (en) * | 2016-09-21 | 2017-04-19 | 库尔勒施得石油技术服务有限公司 | Single current bypass valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115012878A (en) * | 2022-06-30 | 2022-09-06 | 西南石油大学 | Double-layer pipe-based inhibitor filling system for sulfur-containing gas well without production stop |
| CN115012878B (en) * | 2022-06-30 | 2023-06-23 | 西南石油大学 | Sulfur-containing gas well non-stop inhibitor filling system based on double-layer pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106223899B (en) | 2019-01-18 |
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